Build a circuit that performs the following equation using a minimum number of adders: ( P = 2A + 8A ) (two times A plus eight times A) where ( A = A₃A₂A₁A₀ ), ( A₃ ) is the MSB.
a) ( P = A₃A₂A₁A₀ + A₃A₂A₁A₀ )
b) ( P = A₃(A₂A₁A₀ + A₂A₁A₀) )
c) ( P = A₃A₂A₁A₀ + A₃(A₂A₁A₀) )
d) ( P = A₃(A₂A₁A₀ + A₂A₁A₀) + A₃A₂A₁A₀ )